Jinchi Kawakami is a 63-year-old (now, an engineer) widely known as the last surviving ninja. The knowledge he possesses has been passed down by a master an he recently discussed Naruto. A widely popular and watched anime all over the world. Jinchi Kawakami also talked about some other ninja action you see on the popular anime. He covered everything from ninja hand-signs to shuriken throwing.
Watch the video below and enjoy.